Final answer:
The Knights of Labor were ineffective due to their lack of a clear strategy, narrow membership base, and internal disputes.
Explanation:
The Knights of Labor faced challenges that contributed to their ineffectiveness. First, they lacked a precise strategy for achieving their goals, including the 8-hour workday. Second, their membership, though inclusive of women and African Americans, was limited in scope. Lastly, internal disputes and tensions between skilled and unskilled workers hindered their effectiveness.
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